LCOV - code coverage report
Current view: top level - layout/style - PreloadedStyleSheet.h (source / functions) Hit Total Coverage
Test: output.info Lines: 1 7 14.3 %
Date: 2017-07-14 16:53:18 Functions: 2 12 16.7 %
Legend: Lines: hit not hit

          Line data    Source code
       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : // vim:cindent:tabstop=2:expandtab:shiftwidth=2:
       3             : /* This Source Code Form is subject to the terms of the Mozilla Public
       4             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       5             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       6             : 
       7             : /* a CSS style sheet returned from nsIStyleSheetService.preloadSheet */
       8             : 
       9             : #ifndef mozilla_PreloadedStyleSheet_h
      10             : #define mozilla_PreloadedStyleSheet_h
      11             : 
      12             : #include "mozilla/css/SheetParsingMode.h"
      13             : #include "mozilla/NotNull.h"
      14             : #include "mozilla/Result.h"
      15             : #include "mozilla/StyleBackendType.h"
      16             : #include "nsCOMPtr.h"
      17             : #include "nsCycleCollectionParticipant.h"
      18             : #include "nsICSSLoaderObserver.h"
      19             : #include "nsIPreloadedStyleSheet.h"
      20             : 
      21             : class nsIURI;
      22             : 
      23             : namespace mozilla {
      24             : namespace dom {
      25             :   class Promise;
      26             : }
      27             : 
      28             : class StyleSheet;
      29             : 
      30             : class PreloadedStyleSheet : public nsIPreloadedStyleSheet
      31             : {
      32             : public:
      33             :   // *aResult is addrefed.
      34             :   static nsresult Create(nsIURI* aURI, css::SheetParsingMode aParsingMode,
      35             :                          PreloadedStyleSheet** aResult);
      36             : 
      37             :   NS_DECL_CYCLE_COLLECTING_ISUPPORTS
      38           9 :   NS_DECL_CYCLE_COLLECTION_CLASS(PreloadedStyleSheet)
      39             : 
      40             :   // *aResult is not addrefed, since the PreloadedStyleSheet holds a strong
      41             :   // reference to the sheet.
      42             :   nsresult GetSheet(StyleBackendType aType, StyleSheet** aResult);
      43             : 
      44             :   nsresult Preload();
      45             :   nsresult PreloadAsync(NotNull<dom::Promise*> aPromise);
      46             : 
      47             : protected:
      48           0 :   virtual ~PreloadedStyleSheet() {}
      49             : 
      50             : private:
      51             :   PreloadedStyleSheet(nsIURI* aURI, css::SheetParsingMode aParsingMode);
      52             : 
      53             :   class StylesheetPreloadObserver final : public nsICSSLoaderObserver
      54             :   {
      55             :   public:
      56             :     NS_DECL_ISUPPORTS
      57             : 
      58           0 :     explicit StylesheetPreloadObserver(NotNull<dom::Promise*> aPromise,
      59             :                                        PreloadedStyleSheet* aSheet)
      60           0 :       : mPromise(aPromise)
      61           0 :       , mPreloadedSheet(aSheet)
      62           0 :     {}
      63             : 
      64             :     NS_IMETHOD StyleSheetLoaded(StyleSheet* aSheet,
      65             :                                 bool aWasAlternate,
      66             :                                 nsresult aStatus) override;
      67             : 
      68             :   protected:
      69           0 :     virtual ~StylesheetPreloadObserver() {}
      70             : 
      71             :   private:
      72             :     RefPtr<dom::Promise> mPromise;
      73             :     RefPtr<PreloadedStyleSheet> mPreloadedSheet;
      74             :   };
      75             : 
      76             :   RefPtr<StyleSheet> mGecko;
      77             :   RefPtr<StyleSheet> mServo;
      78             : 
      79             :   bool mLoaded;
      80             :   nsCOMPtr<nsIURI> mURI;
      81             :   css::SheetParsingMode mParsingMode;
      82             : };
      83             : 
      84             : } // namespace mozilla
      85             : 
      86             : #endif // mozilla_PreloadedStyleSheet_h

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